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The numbers are relatively prime, or co-prime.

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If the GCF of two composite numbers is 1, they are co-prime or relatively prime.

There is no standard GCF in that instance. It varies according to which numbers you select.

Not necessarily. The GCF of 6 and 9 is 3.

Not necessarily.

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Yes.

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Sometimes

Q: Is the greatest common factor of two numbers a composite number?

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Composite. All whole numbers ending in zero are composite.

The Greatest Common Factor, or GCF.

No. Two composite numbers, like 4 and 9, can have a GCF of 1. They are said to be relatively prime or co-prime.

14. Alternatively, a single number cannot have a greatest common factor because "common" refers to factors that two or more numbers have in common. You have only one number.

There cannot be a greatest common factor if there are not at least two numbers to compare. The greatest common factor is the largest factor that all the numbers have in common - the largest factor that they all share.

Related questions

25 and 36

8 and 16

15 and 16

24, 25 and 26

8 and 16

8 and 16

8 and 16, among others.

25 and 32

Composite. All whole numbers ending in zero are composite.

Yes as for example 34 and 45

The greatest factor that two or more numbers have in common is known as the greatest common factor, or GCF.

There cannot be a greatest common factor if there are not at least two numbers to compare. The greatest common factor is the largest factor that all the numbers have in common - the largest factor that they all share.